Submission #557603

#	Time	Username	Problem	Language	Result	Execution time	Memory
557603		Mounir	A Difficult(y) Choice (BOI21_books)	C++14	0 / 100	1 ms	288 KiB

books

#include <bits/stdc++.h>
#include "books.h"
#define all(v) v.begin(), v.end()
#define sz(x) (int)x.size()
#define pb push_back
#define pii pair<int, int>
#define chmin(x, v) x = min(x, v)
#define chmax(x, v) x = max(x, v)
#define print(x) cout << #x << " est " << x << endl;
#define x first
#define y second
#define int long long
using namespace std;
 
map<int, int> tmp;

int getVal(int i){
    if (tmp.count(i) == 0)
        tmp[i] = skim(i);
    return tmp[i];
}

void solve(signed nLivres, signed aPrendre, long long borneInf, signed S) {
    int sum = 0;
    for (int i = 1; i <= aPrendre; ++i)
        sum += getVal(i);
    if (sum > 2 * borneInf)
        impossible();
    if (sum >= borneInf){
        vector<signed> ans;
        for (int i=1;i<=aPrendre;++i)
            ans.pb(i);
        answer(ans);
    }

    int deb = aPrendre + 1, fin = nLivres;
    while (fin > deb){
        int mid = (fin + deb)/2;
        if (getVal(mid) >= borneInf)
            fin = mid;
        else
            deb = mid + 1;
    }
    if (getVal(deb) < borneInf) impossible();
    vector<signed> ans;
    sum = 0;
    for (int i =1;i<aPrendre;++i)
        ans.pb(i), sum += getVal(i);
    ans.pb(deb); sum += getVal(deb);
    if (borneInf <= sum && sum <= 2 * borneInf)
        answer(ans);
    else
        impossible();
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 15
• Subtask 3: 0 / 10
• Subtask 4: 0 / 15
• Subtask 5: 0 / 15
• Subtask 6: 0 / 20
• Subtask 7: 0 / 20